Migrate manage.py to django-1.4-style
Migrate manage.py to django-1.4-style

Quiets some warnings in celery, also ensures proper
initialization for 1.4.x.

Change-Id: Ib925c712206b99bedbe6f131a44d036bf76bae9e

intel-hpdd/intel-manager-for-lustre,intel-hpdd/intel-manager-for-lustre,intel-hpdd/intel-manager-for-lustre